December 2006
Intermediate to advanced
228 pages
6h 20m
English
book
Introduction to the New Mainframe: Large-Scale Commercial Computing
by Mike Ebbers, Pilar Gonzalez Adrados, Frank Byrne, Rodney Martin, Jon Veilleux
Content preview from Introduction to the New Mainframe: Large-Scale Commercial Computing
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Chapter 2. Capacity 33
for communications. A hardware interface allows the definition of the amount of
main storage to be allocated to an LPAR and the number of processors that it can
use concurrently. We refer to a
processor as the resources assigned and
operating system running in the LPAR.
Each LPAR can access one or all of the processors installed on the machine and
is given a relative weight. The weight is used by a microcoded supervisor
function, the Processor Resource/Systems Manager™ (PR/SM), to determine
which LPAR has use of a CP and for how long. The weight given to an LPAR and
the number of CPs it is allowed to use usually has a relationship to the SLAs
associated with the workload running on it.
The channel architecture, mentioned ...
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